Thursday, April 24, 2008

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Monday, October 01, 2007

Lake amoeba can kill swimmers

It sounds like science fiction, but it's true: Killer amoebas living in lakes can enter the body through the nose and attack the brain, where they feed until you die.

Though encounters with the microscopic bug are extraordinarily rare, it is known to have killed six boys and young men in the United States this year; over the decade ending in 2004, the yearly average was 2.3.

The jump in cases has health officials concerned.

"This is definitely something we need to track," said Michael Beach, a specialist in recreational waterborne illnesses with the Centers for Disease Control and Prevention. "This is a heat-loving amoeba. As water temperatures go up, it does better. In future decades, as temperatures rise, we'd expect to see more cases."

The amoeba, called Naegleria fowleri, killed 23 people in the U.S. from 1995 to 2004, the CDC says. The CDC knows of only several hundred cases worldwide since the microbe's discovery in Australia in the 1960s.

This year, there have been three cases in Florida, two in Texas and one in Arizona.

Though infections tend to be found in Southern states, Naegleria lives almost everywhere: in lakes, hot springs, even dirty swimming pools, grazing off algae and bacteria in the sediment.

A person wading through shallow water stirs up the bottom, and if water gets up the person's nose, the amoeba can latch onto the olfactory nerve, which is responsible for conveying smells to the brain.

The amoeba makes its way to the brain, destroying tissue as it goes, Beach said.

The easiest way to prevent infection, Beach said, is to use nose clips when swimming or diving in fresh water.

People who are infected tend to complain of a stiff neck, headaches and fevers. In the later stages, they show signs of brain damage, such as hallucinations and behavioral changes, he said.

Some drugs have stopped the amoeba in lab experiments, but people who have been infected rarely survive, Beach said. "Usually, from initial exposure it's fatal within two weeks," he said.

In central Florida, authorities started an amoeba phone hotline advising people to avoid warm standing water and areas with algae blooms. Texas officials also have issued warnings.

Officials in Lake Havasu City in Arizona, where one boy may have become infected, are discussing whether to take action. "Some folks think we should be putting up signs," city spokesman Charlie Cassens said. "Some people think we should close the lake."

Beach cautioned that people shouldn't panic about the dangers of the brain-eating bug. Cases are still extremely rare.

Saturday, September 15, 2007

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Cervical cancer gets new vaccine

Cervical cancer was expecting a new vaccine which was recently approved by Health Canada and will be available in the pharmacies soon. It seems the government is also planning on providing free vaccinations to Grade 6 girls, in a effort to cut down the rate at which this disease is growing. Currently there are more than 150 new cases reported every year.

The government has planned to invest $300 million in this. This sure has raises suspicion because that way too much to be invested in a vaccine that just got approved. But since it is approved in 80 countries and the results of five-year clinical studies to back it up, I guess it is on the safe side.

But there’s also reason to be cautious.

Women need to be reminded that this vaccine isn’t a silver bullet – it will not protect from virus strains that cause 30 per cent of cervical cancer cases.

And that means Pap smear testing will remain a necessity.

Here’s where parents need to ensure they, and their children, are informed.

Government watchdogs are also needed to ensure that lobbying by pharmaceutical representatives doesn’t blind health professionals into making decisions that are in the best interest of all involved.

Saturday, August 25, 2007

Take your calcium, elderly told

Paris - Calcium supplements can reduce the risk of bone fractures by 24 percent in the elderly, according to a study published on Friday in the British journal The Lancet.

The study was based on a sampling of 4 500 men and women over the age of 50.

Even when patients failed to take the full doses prescribed, the bone-building element - often coupled with vitamin D - cut the risk by 12 percent, according to the research which examined the results of 17 other studies covering 52 625 people.

"A large proportion of the elderly population is at high risk of fractures," lead author Benjamin Tang of the University of Western Sydney told AFP.

For women over age of 50, there is a one-in-six lifetime risk of having a fracture as a result of osteoporosis, a progressive condition that leads to bone deterioration, he said.

For men in the same age bracket, the ratio drops to less than one in 20.

"But the risk increases progressively as you age. If you are 70, your risk is a lot higher," Tang said.

Calcium is an essential element for the normal growth and maintenance of bones and teeth. Contrary to popular belief, calcium intake is critical not only during childhood but in adult - especially late adult - life as well.

Many medical experts maintain that Vitamin D helps the stomach absorb calcium, but Tang's study showed that calcium worked just as well with or without.

Other studies have cast doubt on the efficacy of prescribing calcium to elderly people at risk of bone fractures.

"But most of these studies had poor long-term adherence" among patients, a common feature for many anti-osteoporosis drugs taken on a daily basis, wrote epidemiologist Jean-Yves Reginster in a commentary, also published in The Lancet.

Scientists have predicted that the number of annual hip fractures in the world, caused mainly by age-related bone deterioration, could triple from 1.7 million in 1990 to 6,3 million in 2050, according to another study published in The Lancet last year.

The number of fractures would climb to 8,2 million if the rate of fractures were to increase by only one percent each year, aggravated in particular by rising rates of obesity.

The medical cost of treating fractures related to osteoporosis is estimated to exceed $20-billion every year in the United States, and 30-billion in the European Union.

Monday, August 20, 2007

Little about Eczema...

The signs of Eczema are reported to be dry itchy red rashes, which might be treated with emollients and steroid cream, however symptoms might return. Eczema may be resulted by suffering from food allergies.
Individuals that suffer from eczema often do not have the ability to process fatty acids. However by supplementing Gamma Lionelic Acid (GLA) which is discovered in evening primrose oil or starflower oil, it is believed they might help overcome this block and stop the condition. Herbalists have advised taking liquorice and preparations of burdock, due to their anti-inflammatory effects. Zinc and Vitamin A supplements may be helpful as both nutrients are said to help promote skin repair.

Saturday, August 18, 2007

Pediatric Cough And Cold Medicines Under FDA Scanner

It seems the most common medicine is now under the scanner. The FDA is taking this measure to ensure cold medications meet desirable safety standards. The review follows many adverse reactions like injuries as well as deaths in some children aged below two years. According to the American Academy of Pediatrics, in the first two years of life alone, most children have eight to ten colds.

The FDA says that parents must take extra care when giving OTC drugs to their children. Following is the Public Health Advisory issued by the FDA:

What should parents know about using cough and cold products in children?

* Do not use cough and cold products in children under 2 years of age UNLESS given specific directions to do so by a healthcare provider.

* Do not give children medicine that is packaged and made for adults. Use only products marked for use in babies, infants or children (sometimes called “pediatric” use).

* Cough and cold medicines come in many different strengths. If you are unsure about the right product for your child, ask a healthcare provider.

* If other medicines (over-the-counter or prescription) are being given to a child, the child’s healthcare provider should review and approve their combined use.

* Read all of the information in the “Drug Facts” box on the package label so that you know the active ingredients and the warnings.

* Follow the directions in the “Drug Facts” box. Do not give a child medicine more often or in greater amounts than is stated on the package.

* Too much medicine may lead to serious and life-threatening side effects, particularly in children aged 2 years and younger.

* For liquid products, parents should use the measuring device (dropper, dosing cup or dosing spoon) that is packaged with each different medicine formulation and that is marked to deliver the recommended dose. A kitchen teaspoon or tablespoon is not an appropriate measuring device for giving medicines to children.

* If a measuring device is not included with the product, parents should purchase one at the pharmacy. Make sure that the dropper, dosing cup or dosing spoon has markings on it that match the dosing that is in the directions in the “Drug Facts” box on the package label, or is recommended by the child’s health care provider.

* If you DO NOT UNDERSTAND the instructions on the product, or how to use the dosing device (dropper, dosing cup or dosing spoon), DO NOT USE the medicine. Consult your healthcare provider if you have questions or are confused.

* Cough and cold medicines only treat the symptoms of the common cold such as runny nose, congestion, fever, aches, and irritability. They do not cure the common cold. Children get better with time.

* If a child’s condition worsens or does not improve, stop using the product and immediately take the child to a health care provider for evaluation.